Finding a direct download for the standalone foo_input_dsdiff can be challenging as it is now considered a "legacy" component.
Some hardware-specific setup guides, like those from FiiO , still include foo_input_dsdiff in their custom "foobar2000 install packs" for compatibility with specific older DAC drivers. Installation Guide foo_input_dsdiff download
To install either the legacy foo_input_dsdiff or the modern foo_input_sacd component, follow these steps: DSD playback on Foobar is awkward and in a neglected state. like those from FiiO
You can find the latest versions of the foo_input_sacd plugin on SourceForge . foo_input_dsdiff download